4ca4dcac721436f2dcb6c41613dd08e14b503ea4ac7fdba60689878510dfeaa7

Analysis

max time kernel
140s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 19:24

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General

Target

2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exe
Size

60KB
MD5

80adeb067cf60c863cda29dc26857a1f
SHA1

f8d67a04dd2aa2840fa941137b2404c610b39de4
SHA256

4ca4dcac721436f2dcb6c41613dd08e14b503ea4ac7fdba60689878510dfeaa7
SHA512

0957e93cec8e0e4146caf674842c461ca2ea0b4e754d4baec35555c332d01800f50907ac37b34ccb7d47d401cc624ab2e4df719d93ffb0134edaf0af43e364fc
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTnk:TCjsIOtEvwDpj5HE/OUHnSMv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1992-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/1992-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/440-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1992-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/1992-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/440-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exemisid.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

440 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
440	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exe

description	pid	process	target process
PID 1992 wrote to memory of 440	1992	2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exe	misid.exe
PID 1992 wrote to memory of 440	1992	2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exe	misid.exe
PID 1992 wrote to memory of 440	1992	2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_80adeb067cf60c863cda29dc26857a1f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1992

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
60KB

MD5
cb3d0064df8b9cdc98f69d29e0e40e2f

SHA1
9c727bba6b9f72014f649cac89419f178ddb26c0

SHA256
56a282651ceed173f5b09320aaaec432feec6507a5dbc0e3d5c3c860fc3fa6c7

SHA512
cc29e3e3a8c998b876082e3abd1a28315311bf30478cac23ff170ec068383a976b9e85d5b283915c7c0c1b3ce4fce0cda60ca7d3ed1dc1406a0c9e4e1771f4d2

Download Submit
memory/440-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/440-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/440-54-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1992-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1992-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1992-3-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/1992-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1992-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download